The duvet cover had an overpowering formaldehyde odor when opened. The packaging smelled so bad, I removed it from the kitchen garbage and put it in the garage garbage can. The smell filled the garage within an hour, and I had to move the garbage can into the woods until trash pick up day. After washing the sheets six times in hot water, detergent and vinegar, the smell went away. So, the good aspect of this product is that it holds up well in the wash. I am not sure that it is safe to use on a bed.